No , not really , the 74 trunk lid doesn't have the cutouts for the underside bracing.

That said you don't really need it , my dad bought a duster new in 1972 , the wing was not available so he had one added to the car , whomever installed it, I think it was the body shop near where we lived , just put a stack of fender washers on the back sade ... HACK ... it stayed on there with no issue for the 130k or so miles the car accrued over decade plus it was on the road.

You could put a 70-71 trunk lid on the car or cut out the underside bracing for the brackets